Any quality small 150w heaters? Also, is one pump enough?

Suggestions? I have two eheim jager 150w heaters, and theyre just toolong for the sump.

I only have room where my reefmat and drains sit. I can put one there a inch from my equipment feet but I don't see two working.

Also heaters, I have my one return in the tank corner but don't give it a ton of power. And a Mp10 I was hoping to have on the same side (other side of tank is next to a seat and the overflow). Do you think one wave pump is enough, or should there really be 2 or more.

Tank is 36x18x24, 65g tank with 25g cube sump.