I mentioned my thoughts to my girlfriend over the weekend, and last night I had a long talk with one of my best friends, someone who understands where I'm coming from, during which conversation we talked about this. Based on that....
For now I am going to focus on getting the SE-R back on the road. I had already begun work on the car, and I have all the parts I need and a hoist (I'll pick up a stand once the engine is on the ground.) I will do everything I can think of on the car so that it is in drive-across-the-country now readiness, rather than just drive-around-the-midwest and winter-car readiness. (Rod bearings, PS leak, rack boots, CV boots, might as well do the clutch, replace any cracked rubber, strip/recoat ugly bits, steam clean dirty bits, replace header with newer unit, add rear strut brace, reinstall intake, new fluids, fix horn, reinstall PS door trim) Even with all of my travel plans, bike rides, etc. I am pretty confident I can get this done by mid-September, which is good enough for me. Before I can get too far into this, I need to give the Fiat an oil change and fix the stumble/hot-restart issue and drive to my house to park next to the Honda and clear up space in the other garage for a work table, the hoist, engine stand, etc.
I've suspected, and my conversation last night confirmed, that if I had to get rid of, or decided to get rid of, one of my other two cars, it would be the Fiat. If I do a thought experiment based on getting rid of / losing / not having either car, the SE-R is the clear winner. So I will give the SE-R everything it needs and then take some sort of action on the Fiat. That might be putting it up for sale, that might be keeping it. I know that with this issue, as with many others, I can easily be overwhelmed by too long of a view and the number of things that need to get done, rather than focusing on the next 1-3 steps. Hell, I was static for most of last year on the car work because I couldn't decide which one to prioritize; I ended up prioritizing neither.
Meanwhile, a couple of comments here stuck with me since they spoke to a feeling I know well - as practical and perhaps "Mustachian" as my Accord is, it puts me at risk of having my Car Guy card taken away from me (so to speak), and at heart, since that is the car I drive essentially all the time, why should I drive something I am 'meh' about when I can drive something fun instead? So I consinue to shop for something like a V6/5MT Mazda 6 hatchback/wagon (
http://denver.craigslist.org/cto/5024422390.html), 5MT Mazda 3 hatch, VW GTI, A3 or A4 Avant. No rush, so I can but when the right car comes along and then sell the Honda.