Where do you plan to keep and use it once finished?
Will you keep it in the Bkk shophouse and trailer it to Pattaya/Cha-am/HH etc at weekends?
(never mind, above post answered it. )
I can say something more about it. It is possible to trailer it to Cha-am or any other area. But after finishing the Hitia 14 I need the space in the shophouse to build a larger one.