What to get for my 20 long?!?!?!

I just set up a 20long and it has just finished cycling! I want to get a chiclid to put in it but idk what one!

This is what im thinking so far:
1) Convic- single male
2) blue/boliv rams- 2 or 3 all same sex
3) jewel cichlid- single male
4) electric blue acara- single male

Number 3 and 4 im not sure if i can keep them in a 20g long. I have heard mixed yes/no on the jewel and cannot find info on the EBA.

And input is welcome as long as im not being insulted!

I am debating between thos options i know i cant keep all those fish in a 20g

The tank will be a dedicated cichlid tank so the convics attitude tword other fish is not a problem as i dont want fry so i would get a single male.......can a jewel fit in a 20L?

How about a single ob peacock? Sorry for all the questions im new to chiclids

I think i will either get a couple bolivian rams or a male convic. I want to avoid fry so if i get some bolivians they all need to be the same sex....would 2 males get along? Also my LFS said they rarely get them in. I do have all the large cain pet stores near me however.