You must get the at a minimum the 30 amps, but before you do ask the electrician the difference in cost to install 50amp vs 30 amps. It will cost more but if you have a RV and apad the difference is negligible.
Do you need a 50 amp right now? No, can you get by without 50 amps later? yes but why people that do this don't get the 50/30/20 amp pedestal baffles me
In my case, I wired it myself it was only about $100 difference in wiring and the pedestal. I have 50 amp RV but I used all three including the 20 amp with no issue until this summer, I leave it on 50 amps now because of the heat and when two ACs are needed.
Buy it and don't look back
https://www.homedepot.com/p/Eaton-Po...sc__WA35374353