I'd consider putting the SB lathe by the CNC mill. Then shift the Bridgeport so it's just clearing the rec room wall at the rightmost extreme table travel. Depending on the amount and nature of use of the grinder and belt sander you might want to isolate them as far as possible. Maybe even into the utility room if it's just air handler and such, although probably not a good move if it's also laundry.
You have a fairly large area devoted to the stock rack, so I'm guessing you break down larger pieces on the band saw and use the belt grinder to deburr. Getting the bandsaw and belt grinder closer together might be beneficial. Putting these on the rec room wall side of the shop might allow getting further away from the machines with grit and ease work flow. Out in the garage might be a place for stock and grinding/rough sawing if space allows. The less dirty work you have to do around the machines the easier it is to have your shop pleasing to work in.
Depending on the size and weight distribution of your drill press, a good roll around base could let you shift the drill press around and move it out of the way. The locking bases that are really heavy duty and sit down on pads when parked are great, locking caster sort of deals haven't been pleasing to deal with for me. There is a nice little open area in the corner on the lower left side of your drawing (woodwork area). If not already spoken for it could be a good spot for a drill press and shop vac to live out of the way but easy to pull out when needed.
If you are going to have anything on wheels that are fairly small, cut some PVC pipe rings that are an inch or so high and put them around each wheel. When moving across the floor these tend to sweep any bits of gravel or the like out of the way rather than tripping the wheel. Learned that trick with engine cranes
If you do most of your work on the CNC machines, optimize the shop to use these easily. In my shop I just have to accept that some infrequently used machines are not "optimally" placed or supported, but while irksome on occasion it's a trade off that lets me use the main machines quickly and easily without having to do the limbo to get to the tooling cabinets.
Have fun, it's never perfect in a shop for all work conditions. Pretty good most of the time is a fine accomplishment. Don't let it get you down. After 45 years of this, it's still a struggle to figure out how to set things up!
Stan