Is your plan to purchase prehung solid wood doors, remove the existing doors and trim & then install the new doors? I ask because it's often less expensive for labor to use prehung doors.

Find a source for the prehung solid wood doors with pricing you can accept and then see what species of wood and finishes they offer. The options are more limited than if you select custom doors.

Here's the cost of one door & then add installation.

I would recommend taking a sample of the flooring with you when you search..there is so much more to be decided than just the wood..this way you can show color..and grain..it also matters what the style of the home is …there are so many different styles …and that is an equally important element…if you have no sample…. then ask for samples of the door materials to bring home to compare to the floor…

Another element to consider is baseboards…will they also match?..or will they painted? All oak Wood work trim (doors ..floorboards..windows .. crown moulding?)will be a huge expense unless you opt for less expensive painted trims

Medium oak what is that ? Pics of the floor at least would be helpful IMO if yiu want wood doors then they shoud be the same wood as the floors . Too many differnet woods all taking stain differently just make a mess. We need a lot more info. Post pics and info here in comments DO NOT start another post