Man, a 60 gallon is going to be amazing! You have gotten some excellent advice already, but to +1 what others have stated, let that shrimp colony get nice and established (as in months at the minimum) before adding any fish. Once you have a stable colony, and fairly heavy plant/hardscape cover, the shrimp will likely reproduce like mad, even if half the babies are snacked on by fish you eventually add!
I don't have much (any!) experience with larger fish, but my 29 gallon is home to 100+ red cherries, who live happily with a couple otos, a twig catfish, a few random tetras, and a dozen+ each of mystery snails and (male) guppies. Also, the heater keeps the tank at 82, and the shrimp are fine -- likely since they have lived in this water for generations. If you end up with fish that need a heater, you should be able to slowly warm up the tank with a heater and within a shrimp generation or two (at the worst), they will thrive in the warmth. I actually have heaters on almost all my tanks that have shrimp, and they do just fine.
As for plants, I find crytocorynes to be easy to grow, along with other beginner plants like anubius (I have the nana petit variety), along with frogbit (it is super cute to see the shrimp hanging from this upside down), and mosses (I have java...it gets big after a couple months, but shrimp love it -- don't be afraid to chop it down to size & toss excess though, if it gets out of control!). Be aware that most plants you purchase at your local fish stores will have been grown out of water (for quicker propagation), and will melt back a bit once planted in your new tank. Give it time and most will bounce right back! Also, I love monte carlo...even if it doesn't carpet it is a pretty plant.
For shrimp purchases, you may find that buying from someone in your town that breeds their own will be worth the investment. You'll likely have similar water parameters, so more of your shrimp will acclimate easily to your tank, meaning more will live through the process. Purchasing from further away means likely vastly different water parameters (oh yea, get a good water testing kit -- API master kit, plus GH and KH testing kits). Long distance purchasing also means shrimp stressed from transportation. It is not unusual for people to lose a fair amount of their shrimp due to these two things. That said, I have heard great things about theshrimpfarm.com! Good luck!
It's not a mystery...snails are the BEST!
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