That was my solution, too. Multiple monitors are a real productivity booster. I have one 21", one 24" and one 27" monitor - from years past - connected to two cheap video cards. If you do not play games you do not not tax your video cards very much. Both of the larger monitors are turned sideways so I can see longer code listings at a glance, and especially see how the if-else clauses line up.
Do *not* put the top of the monitors at eye height. That was great advice in the days of 16 inch monitors.
I made the height of each monitor such that looking straight into a monitor would have my eyes 1/3 the distance from the top. The eyes normally can look up slightly without neck strain. The head can tilt down well without strain.
If you don't want to build a special platform, just buy the right thickness of paper reams and/or wood, as suggested elsewhere.