Since you really have to run Deca a long time to get the full benefit out of it, I think long estered test (enanthate or cypionate) is the way to go. Throw an oral kicker in and you will be golden.
How about test decanoate if you can get it? Exact same ester so same clearance time. I've seen it offered so I know others have access as well. They're both long-acting so you'd def want a kick-start!