your at a different scale then me but the end result is the same. here is the setup I went with. had many farmers and truckers give me advice. leave space around dryer and wet bin for expansion of legs and stuff. I brought in a 600 amp single amp service for future growth. also started out with augers but left lots of room for legs and pits to be brought in later.
what size wet bin are you thinking? i would be thinking if a wet bin roughly the size of what your daily production. dryer can run at night while you sleep. we have a 3k bushel wet bin if we start out empty in the morning we can have it filled later that day. then it runs all night to be empty next morning. saved us a lot of money on dryer size. with the scale you are talking a big wet bin with dump pit for trucks and leg for wet bin, big leg out of dryer going to bins, can get over unders for going to bins legs cant reach.
what i learned from the neighbors that have been there done that is you are a lot better off just spending the money if you can to get setup and running organized way vs running augers or air across ways to get to bins. for the capacity you are talking trucks need to get in and out fast.
check out southern Mn. craigs list or grain dealers and huge used dryers are easy to find at a pretty reasonable cost.
the calcu dry system that came with my drier is a dream. later models will have there own version but love it. for the first day or two every time i came in to dump i did a moister test to compare whats coming out of dryer to moister tester to dial the dryer in. after them couple days now its always within a couple tenths. with plenty of safety in place its a leave it run all night system.
for filling from wet bin to dryer there is a paddle switch when it falls it tells wet bin to start filling the dryer, when grain hits the switch it tells the wet bin to stop. but there is also a timer and it it takes to long because the wet bin is empty it shuts down the hole dryer, if the paddle switch fails it will only run for the length of time and then shut down dryer.
on the unload there is a mercury switch, if the auger going from the dryer to bin stalls the auger out of the dryer will flip a lid with a switch to stop dryer.
talk to kieth at gmls industries for site layout and moving grain. he can talk to you about air systems and the power they need, bushels per hour, horse power and all that jazz.
for the acres you are talking i would either clear the spot around the bins you have or move them bins to be close together.