Home game help

[PShabi]

NL tourney players, give me some help here. I've posted about this before, but I need some help again with my home game. I'd like to spice things up a bit.

Right now, it's 6 or 7 players, sometimes 8. None of these guys are online playes and don't have a lot of dough. So we play a $20 freezeout. We prefer a long game and have it set up to last 3.5 hours on avg. Getting down to 3 wouldn't be terrible. But the game does get slow occasionally, so that may be a cause too.

Anyway, I want to go to a rebuy format. Give me some feedback on a structure. Here's what I'm thinking so far:

$5 rebuy tourney, but I'm treating it like everyone is smart at the beginning and takes an initial rebuy. So, it's a $10 buy w/ $5 rebuys.

$10 gets you 2k in chips and $5 rebuy gets you another 1k. Rebuy at 1k or less. Sound resonable?

Now, we like to go with 3 denominations in chips when we play. I do not want to change this to avoid confusion.

We have 25, 50, and 100 t$ chips. What would you suggest running the blinds at? We usually play longer levels also. I don't really want blinds changing that often.

What about 30 minute rounds of:

25/50
50/100
75/150
100/200
rebuy ends; probably an option to add-on as well.

15 minute rounds of:
200/400
300/600
400/800
500/1000

How fucked up is that? That's basically what we do in our normal game right now and we start with 2500 in chips. That's about 3.5 hours. In the rebuy, when it gets late, there will most likely be way more chips in play. So this may take way too long. Hmm, what if I drop the 3rd round altogether?

Help please.