PJ15 like jet?

[cosmogod]

I want to build a basic pj15 like valveless, to get a simple 1kg wood/metal delta wing in air with simple flight maneuvers. I have welding station, and most of the workshop machine at my disposal.

Reply with your suggestions,
-cosmo

P.S.: I would be probably using kerosene, so any idea abut the approx flight time will be greatly appreciated.I am planning to have a flight time of at most 5 mins. And am ready to face a steeper learning curve.
cosmogod