[UPDATE: Someone asked me for an update - a little over a year later - see it below]
Long time lurker - first time poster.
Background. I'm an EE in Colorado. I currently work for a very large corporation that is consistently in the top 100 of the Fortune 500, and I'm pretty miserable, not with the day-to-day work, but with the climate of the company. I have been looking around the CO Front Range for quite some time for my next opportunity, both internal to my company and external to my company trying to get to a happier place. And I think I have finally found a place that will be a great match. I am hopeful that I will be given an offer in the next week or two for a small startup (in Longmont, of all places). I am a little behind the 8 ball on my knowledge of how a startup works, but I have been doing a lot of research, and am excited about the opportunity.
The pluses of switching paths: I will be working in a small engineering team with more experience than I on a daily basis. Which will be HUGE for my skill level. The group really seems to be a good group of folks that seem to get along. The company is in a hiring mode, so they seem to be growing rapidly (about 50%/year). They have been in business for over 10 years now and the Engineering Manager has a lot of experience in management, engineering, and startups. The engineering group seems to be having a lot of fun, and don't appear to be overworked. The company has also had a recent $10M+ investment round, so they appear to be trending for the positive.
The downside: I know that I will be up for a promotion in the 6 -12 months with my current company that will increase my salary by at least 10% - not to mention my 10% 401k match. Whereas, the new company has no 401k match, but does offer equity in the company. I also expect that my salary will go down because my experience level for what they want specifically is not fantastic. I'm a good engineer and I have no doubt that I will succeed technically, but right now I have limited experience in the areas they need. But the bottom line is that I expect to be guaranteed at least 20% less money with the startup than what I'll make at the big corporation, probably closer to 30%. I might make some extra cash if the company is acquired, but that's no guarantee, and it seems that there are too many variables (strike price, taxes, option depreciation, acquire price, etc) to very accurately determine what my equity will be worth if the company is acquired or bought out.
So my question: Do I chase happiness now at the small company with more fun work, or do I stay with my current company which is very stable company, and my FIRE being very attainable without much question, for pretty much guaranteed retirement happiness in a short time-frame, possibly even early 40's. It seems that I will make a lot more cash and will be much more likely to actually achieve a 45 retirement with my corporate gig, but that job is draining, long hours, and low moral, and little of what I really enjoy doing (design).
Other pertinent information:
My wife is starting to bring home money from her own business. She expects to bring home significantly more money starting within the next 6 months which will basically offset any reduction in salary that I'd attain. Her company is about 3 years old and is still highly volatile, but they continue to grow while being debt free.
We are debt free, as of this month (so long student loans!!!), except my house.
My current savings rate is about 30% (Including my house principle payments, my 401k and company match, and student loan 'savings' which I will be stashing instead of paying to the student loans.) I realize that I need to improve this a bit if I want to achieve FIRE.
I am 33 and wish to be FIRE by 45.
My net worth is about $0.25M
I do wish to continue engineering work after FIRE, assuming I'm still having fun and am learning new things, but I want the flexibility to be able do what I want to do as well.
I don't completely subscribe to MMM, YMOL, YNAB, or DR, but I take a bit from all of them and at least move in the right direction, even if I don't achieve all of my goals in the timeframe that I'd like to.
Seems that this is a bit of brain bender for me. Happiness now, or happiness later, and what is more mustachian? I know what I WANT to do, but am struggling with the retirement scenario that it will leave me in. Also, the new job would leave my family with significantly more risk because both my wife and I will both be in high risk work environments.
I know these are pretty personal questions that only I can answer, but maybe someone here has been through the same things and can offer my wife and I some advise. I really wish I could have my cake and eat it to.