Should I bother trying to surf on this board?

My mum picked up a really cheap board for me to use - trouble is i'm quite a beginner, well i've had a few lessons, can pop up and ride in rental boards and have started to turn a bit.
This board is only 6'2, 20" wide and about 2" thick, but i'm only 5'2 myself (and a smallish girl) so shall I just take it out and have a go or am I doomed to failure?! It was quite dinged up but i've filled in all the cracks with a proper repair kit and sanded it off so it should be watertight now, i'll get myself a decent board when i'm better
Thanks!
This board is only 6'2, 20" wide and about 2" thick, but i'm only 5'2 myself (and a smallish girl) so shall I just take it out and have a go or am I doomed to failure?! It was quite dinged up but i've filled in all the cracks with a proper repair kit and sanded it off so it should be watertight now, i'll get myself a decent board when i'm better

Thanks!