Hi, Jason. All of those choices will work in the short run and possibly cause problems in the long run, depending on a lot of factors like the length of the parts and the corner joints used, if any. The problem is that the plywood will not move much because of it's cross grained glueing but the oak facing will. Changes in humidity will allow the oak to move and the longer the piece, the more possibility of movement. The bisquits will be the best choice of what you have and possibly the best overall choice will be a breadboard edge. The last is just too complicated to describe here, but it does allow some movement. The real problems are: 1. can your saw handle the set-up to cut a breadboard edge cut on the total sized of the plywood, 2. does your table saw have a fence capable of making tight tolerance cuts. A spline joint would be good too but you would have about the same saw and set-up problems.
Personally, if it was me and the length of hardwood strip was 2-3 feet or less, I would go with the spline and if more than that, bisquit slot it and worry about it in a lot more years. Be careful that you don't cut through the oak while cutting your slots.