For the money that base looks really good.
If i was you i would buy a rear hs33, and then with your vee brake use all the best stuff. So then you would have a rear hs33 with good braking power and a front vee brake that works good.
I wouldn't get a disk because.
1 you could bend/snap the rotor.
2 It will cost more.
3 It will only have a tiny bit more power.
But hey its your choice.
Thanks Sam.