i typed in your dimensions on aqadvisor to see what tank size it is and it said it was 32.2 gallons.
They're often listed on aquabid.com but shipping may not be a good idea if the weather is too cold. A common bristlenose pleco may be a better option,
My "generic " Ancistrus/Bristlenose Plecos will eat zucchini, cucumber and yellow squash. I bet they would like spinach too. Let us know
They don't hurt anything and they clean up uneaten food. Unless they are eating up your plants, which in my experience trumpet snails rarely do, I would
I have kept RCS / Neocaridina as well as Caridina shrimp in a 40 Breeder with Ancistrus/bristlenose plecos for several years. There are plenty of shrimp