"I'm choosing 100 watt due to portability..." Why? Is that adequate?
Set it up each morning, watch for theft, move it around, take down for lunch in town, set up upon return, watch for theft, move it around, take down at sunset. Tomorrow, repeat. Much easier to mount the panels on the roof after an energy survey determining battery size, number of panels needed etc.
Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad