Sharpening that will be a chore... Just grab yourself a good heavy, comfortable box cutter that uses razors. Spend your $25 on a few extra blades and a pack of basswood. Get used to how the blade works when used on wood grain at different angles and directions.

I've got a drawer full of knives and still grab a razor knife for just wasting time whiltiling. It's quick, easy, cheap and it needs no sharpening.

Just my thoughts. If you really want a knife just get a Chinese buck knife. Mine holds an edge better than any expensive case knife I've bought yet.

Something like this.. Buck Knives 375 Deuce Two Blade Folding Pocket Knife https://www.amazon.com/dp/B000EI0VXO/ref=cm_sw_r_cp_apa_i_PmajDbA7Q9R5W