not sure whats very high sectors but ive noticed any scanner module or upgrade that increases your scan range seriously hampers your progress by stopping higher-tier pois to spawn since your screen was littered by low-tier pois, at least it was in 0.51, so in 0.52 i just never take those
prestige resets the tree, though im not sure it gives anything at all. if you dont press your skilltree before clearing sector one, you ll have enough experience to preserve first 5-6 modules. usually only homing/pierce/and maybe shield restore or a module with 3 chips like proc/shield restore/mulishot something if placed high enough are critical. besides it looks like your weapon upgrades ones you bought in maintenance depots or how they called stay intact on prestige, so you pretty much only need homing/pierce to blast. well and not get into lv 11-19 elites maybe