Well if It were me I would do something closer to 8-9% if adding whiskey and oak, 7% in my opinion is too close to a session beer but thats just me. Also chips impart an acceptable flavor within 1-2 weeks so its important to sample the beer every week.
Oak cubes on the other hand can sit in the beer for months and are said to impart a fuller oak flavor. If you keg with them your beer will gradually have more oak flavor so it might not be the best idea unless your planning on drinking it fairly quickly.
Also be very careful with the adding the whiskey adding a little at a time then sample to get the flavor balanced.
Sounds like a good beer. Im doing a oatmeal imperial stout soon, a 9.5%, 90 ibu with oak chips that have been sitting on JD for 6 months. I cant wait.
Good luck Im sure it will taste great!