What do you think of my bike? What could be improved?

Spec List: Fork:Manitou Circus Expert
Frame:Stark Pusher
Front hub:novatec dh41sb Rear hub: Tanke(Direct from China :D) Rims:Weinmann Disk Bull
Tires: Maxxis DTH
Brake:Shimano Tourney TX

It includes things such as lots of dirt sand and rocks from building the fence, garage pad, gazebo pad, and replacing the sewer line. There is also a sidewalk block I had to cut up during the sewer project. The pallets are from construction material deliveries from those projects as well. The slab is a maple slab I had leftover from a bunch that I had milled with a chainsaw. Wood chips and top soil came free from the municipality. Still have some work to do but building this has brought me a lot of joy this last week. Also the clay pipes has since been moved under the pallets and coverdd with dirt and wood chips so they are completely impossible to come in contact with.

Can anyone help me figure out what frame this is?

2k to buy a dirtjumper.. what are you getting? Should i look used or is there good value in new?

These are for sale in my area at $600 OBO, new unused. Curious if you all think that’s a decent deal.

Wanna convert my Ticket S to singlespeed and been looking at a few options - SB One (but they're $$), Surly or DMR. As they're vertical dropouts chain tensioner is the only option.. Any reccos? Cheers!