I wouldn't assume he'll be bad against RHP (of course, depends on what you mean by "bad"). I have a similar player currently at Con:95 Pwr:74 v.L:49 v.R:83, Eye:86.
His weak split is a little better than yours and he faces fewer offhand pitchers than your guy would, but I play him full time and in 2300 AB's he's career avg .290 / .389 / .502, 120 HR's. Last 2 seasons v.L 200AB's/.281/.362/.513 and 174AB's/.287/.383/.534.
Oh, and by the way, he plays half his games in TAC - extreme pitchers park. I would be very careful trading him unless you really love what you are getting back. Your guy will probably surprise you on the upside when he approaches his ratings.