Hola, Senor:
If I'm reading this correctly, you've invested a total of 35.5k, 24K of which is in an rrsp gic, which barely keeps up with inflation. You have a further unregistered 10k in a bond mutual fund (for which you pay about 1.5% per year, per Scotiabank's fund sheet). This bond fund has returned 4.75% over the last 10 years. So, you're making 4.75, paying out 1.5 on that, then losing ~ 2.5 to inflation. So that's a whopping 3/4% real rate of return (obviously being very simplistic with the maths here, for illustrative purposes). You are currently paying 4 1/4 on your mortgage. Scotiabank must love you (assuming your mortgage is with them)!
You mentioned that you may lack a risk/return framework. From what you've said, all of you money is in ultra-conservative (gics and saving accounts) to conservative (bonds) investments. There is really no chance for growth. That being said, the only risk with these investments is inflation risk - you lose more to inflation than you earn.
You mentioned e-series funds, which are index-trackers (as suggested by sol). The bonus to these is the low fee you pay (.33 - .53%), thereby keeping more of your money in your possession. Other low-cost index investments are ETFs, but I don't think you have enough money to offset the costs of purchasing these, yet. E-series is likely the way to go at this point if you decide to invest in indexes. Note: they're stupidly convoluted to buy. Find an online step-by-step on how to open and fund 'em.
Respectfully disagreeing with Kestra on TFSAs. TFSAs are fantastic vehicles to grow your money tax free. Many suggest keeping your emergency funds in this vehicle, but you then lose the opportunity for tax free growth. Since emergency funds must be kept safe & liquid, you will end up earning some crappy interest in a saving account, instead of investing and making tax-free gains. Please don't squander the gift of the TFSA by using it for "savings". Why bother shielding 1%/year on 10k (ie $100) from tax, especially at your marginal tax rate?
Is there a cost to get out of your unregistered bond mutual fund? If not, consider the index alternative, with TFSA registration. The nice lady at Scotiabank won't like it, but you'll be saving yourself ~1% in fess, year in and year out. Over 20 years, that's a fair amount of doughnuts. A decent asset allocation (include equities!) should return some gains over time.
Re: your mortgage. You have 3 years left in your term. When the term is up, what do you anticipate your balance to be? It's entirely possible that in three years, you'll be looking at higher interest rates (though we've all been saying that since 2009...) A blend (of rates) and extend (of term) may suit in this case, as you might be able to achieve a low rate for a longer period of time. On the other hand, as you seem to be a conservative type (given your investment mix) perhaps paying down the mortgage with your existing funds would suit you better than investing. It is traditionally seen to be "safe", although if your house drops in value, as it may well do, you'll curse yourself (and me).
It's difficult to make meaningful suggestions without having concrete goals stated, and without a wall of text. I'll leave it there for now. If you've questions about this, by all means ask!