8gpm Plumbing and Flow Pro Questions

Hey guys I have read through similar threads and im not finding the answer I’m looking for. Apologies if this is redundant.

I’m finally upgrading to an 8gpm 3500 belt drive machine assembled with Honda and GP. I plan to run 50’ of 1/2” down to another 200’ of 3/8”. 1” water supply line. About 5’ long. And 3/8” whip to reel. Will running my pressure hose this way mitigate friction loss and how will this set up affect daily workability?

Setting up the Flow Pro as well. Should I opt for 3/8” or 1/2” bypass? Also is the 3/8” hose reel whip sufficient?