Welcome Kdebo,
Typical solar sizing would involve calculating your power needs and then designing a system to support it.
If you want to start with a set solar array size and then build around that then I would look at:
https://www.renogy.com/calculators/ and plug numbers in for load until you find a good match and go from there.
Kind of a backwards approach. Perhaps someone smarter than I am will chime in with a better idea???