It's a good theory, I like it. I personally try never to train Second Tiers, due to the upkeep, but using them to get your Blood started ASAP, isn't a bad trick.
The only problem with this as far as my own style, is that I like an Imprisoned rainbow, and to work this, you need to only be Dormant, so you can summon your count(s), correct? Also I would be sorely tempted to just Blood Hunt the capital, and Patrol, so I'd probably want Growth, further impacting available points for a good rainbow pretender.
I think in my case, I'd find the happy medium by letting it take just a couple more turns to get the hunting started, in order to optimize the targeted province, the scales, and the disposition of forces. My inability to sacrifice "economy" for "horsepower" borders on OCD.
