If your standing waves mean you only need to attenuate frequencies with EQ then you're very lucky! A standing wave means there will be some parts of the room that are too loud (antinodes) and some that are too quiet (nodes). Bass traps are to eliminate standing waves such that you won't have this variance around the room. The bigger problem is when your sitting position is in a node meaning you will completely lose a bass frequency. You can't EQ that back.

EQing out bass if you sit in an antinode is definitely better than nothing, though.