Furthermore, you initial statement is my actual plan. I am considering buying the ViP922 as my main DVR, and then buying 211s for the other 3 HDTV's in the house.
Humm, you also said 211s were free for you. Can you let us in on how to get them for free?
I'm not sure if you are buying the receivers to avoid a 2 year commitment, but if you are OK with the commit you can come out ahead $ wise. To start with, you could sign up under a referral and get $50. I'd be glad to supply a referral code (because that's $50 too), but you should have no problem finding a family member, co-worker, neighbor, ... that subscribes to DISH to supply a code. The 24 month commit is required for the $50, getting at least one leased receiver. It also gets you $15/month off for a year, Free HD for Life, waive Activation fee, Installation, HBO & Showtime for 3 months - the basic new sub offer. Those aren't choices if you buy all your equipment and activate service.
DISH limits you to three receivers - and they can can service those three receivers with their 1000.x dish. To add a 4th receiver, you need to use an external switch to supply 4 receivers or put up a 2nd 1000.x dish that could serve a 2nd set of 3 receivers (or similar for your 4th). If you really want a 922 and 3 211s, your best course is to contact a local retailer. It shouldn't matter (absent a commit issue) whether you own all 4 receivers or lease 3 and purchase one from the retailer. Myself, I'd probably lease the 922 for $200 and two of the 211s for $0 each up front (until you purchase the EHD for it). Then, you'd have to purchase the 3rd 211 and pay the retailer something for the external switch that supports 4 receivers. A 2nd 1000.2 dish can be cheaper than the external switch, but you'd have two dishes. If you are certain you want to purchase the 922, you could lease the three 211s - but you still have the 4th receiver problem.
A local retailer could come up with a specific equipment deal that included the necessary switch (or 2nd dish). But the new sub offer you see is geared to DISH supplying the leased receiver and "standard dish/switch".