Back on topic:
I'd say you are being quite selfish, it probably is worth waiting (not as if it costs anything to wait and you have a computer that works in the mean time). Your dad is the one paying, he should be the one to decide, not you or a random person on the internet (e.g. me)
If you wait, you can probably get the same spec machine for a bit cheaper (£100/$100ish) and it will most likely have a better GPU.
I'd say you are being quite selfish, it probably is worth waiting (not as if it costs anything to wait and you have a computer that works in the mean time). Your dad is the one paying, he should be the one to decide, not you or a random person on the internet (e.g. me)
If you wait, you can probably get the same spec machine for a bit cheaper (£100/$100ish) and it will most likely have a better GPU.