[JOAT]

The biggest issue I see is that the 1/4 shank isn't particularly strong, so you will at least want to make a lot of very shallow passes to make the full cut.

All I use is 1/4" shanks. Normally rout 1/2" plywood, but yes, do take shallow cuts, AND often rout very slowly. Slow and shallow has kept me out of having router problems lo these many years.