Lando...
You have a max alloted space of
2000kb which should be plenty of space in the
Members Gallery to get at least 18-22 pics up in your gallery.
Each pic has a max of
150kb which is also plenty for each pic.
I assume since you mentioned that they are "hi res", that they are
huge in file size and w and h. Just resize them appropriately and upload them.
Level One Supporters get 4000kb and a max of 175kb for each pic
Level Two Supporters get 6000kb and a max of 175kb for each pic
info
here and
here
Normally I put my pics at a max of EITHER 600 pixles with OR height.