if molecularshell is working fine, you should delete vitashell and run molecularshell, look into PATCH folder and delete vitashell folder in there and download vitashell 1.9 vpk, install it with molecularshell, you cant install enso again, dont try it.
my vita is 1000 series so i cant use internal memory for apps, so i cant say anything about it, so just install it to your sony memory card.
and homebrew browser has 1.2 version
try this link for 1.3 switch version
https://github.com/Applelo/SwitchSD2Vita/releases