Oh my, i love the look of these fish! I really really want to add some to my tank, but I am not sure if I have room, can I get some opinions?

Current tank:

46 gallons - bow front
8 tiger barbs
8 gold barbs
2 Blue Rams
1 redtailed shark
1 common pleco.

I would be removing the pleco (I have found someone who wants him). I would like to know if I could add M. boesemani Rainbows and if I can how many could i add? I don't want to overstock my tank. But if I could have some of these beauties in my tank I would love it.

Thanks for any opinions!