Shortboard or Fish ?

I'm brand new to this site and could do with a little advice. I've got a 7'10'' custom built minimal and I love it (although I put a serious ding in its tail on Sunday - not happy). Had it over a year now, and have no probs catching waves, popping, and doing basic turns. But I am still stuck mostly in the white water.
I know there is no shame in this (being in white water), but I simply cannot paddle it out beyond the breaking waves (I'm only 5'6'' & under 10stone). I really want a board that I will be able to paddle out a lot easier. I'm not massively confident, although I am quite a strong swimmer and reasonably fit. Therefore I wont be entering surf bigger than 4 or 5ft.
Bearing in mind my height and weight, what would suit me best (shortboard or fish)? Also what size range ? I would say I have very good balance, particularly for someone that's only been surfing a little over a year and am developing pretty well.
I'll probably go for a secondhand board, and I mostly surf at Watergate, Fistral, Croyde and the Gower region in Wales. I did try the search function and had a long look at loads of posts but couldn't find anything specific to my needs.
All comments from experienced surfers would be appreciated !
I know there is no shame in this (being in white water), but I simply cannot paddle it out beyond the breaking waves (I'm only 5'6'' & under 10stone). I really want a board that I will be able to paddle out a lot easier. I'm not massively confident, although I am quite a strong swimmer and reasonably fit. Therefore I wont be entering surf bigger than 4 or 5ft.
Bearing in mind my height and weight, what would suit me best (shortboard or fish)? Also what size range ? I would say I have very good balance, particularly for someone that's only been surfing a little over a year and am developing pretty well.
I'll probably go for a secondhand board, and I mostly surf at Watergate, Fistral, Croyde and the Gower region in Wales. I did try the search function and had a long look at loads of posts but couldn't find anything specific to my needs.
All comments from experienced surfers would be appreciated !