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threedogs yes do remember the LR tropical roof. Have done the cork tile roof and side thing and of course very familiar with the internal drips from condensation off metal roof inside sleeping.
Batteries have improved a little over the last 20 or so yrs but lagging well behind for storage in independent pwr sys and remain expensive. Have been off grid now for 30yrs and still use FLA batteries, interesting the first PV modules I bought(1990) and still using some today were Australian made BP275 (75watts) @ $650 each '90.
My fishing trips (high country) usually away 2 night(generally stay put), only demand is Engel 40lt and LED light strip so manage well with deep cycle nom 100Ah Lead Acid battery in eng bay - no PVs.