First, welcome to the noble Blood Angels.
 
 
 
 I'd recommend against buying the 
BA or the vanilla battleforces. Sure, the cost for the box is much less than the cost of the units inside, but buying plastic models you won't end up fielding doesn't make it a good buy. So let's break it down:
 
 
Vanilla Battleforce wrote:10 Man Tac Squad
 5 man Combat Squad
 Rhino
 5 man Scout Squad
 5 man Assault Squad
 
 Cost $90
 
 Good Stuff: Assault Squad (your bread and butter as a 
BA player)
 
Okay Stuff: Rhino (if you run a mech 
BA list, or field 
DC, you'll want one)
 
Bad Stuff: Scouts, Combat Squad, 
Tac Squad (they just aren't used in 
BA lists. scouts probably the most of the 3)
 
 
BA Battleforce wrote:10 Man Tac Squad
 Rhino
 5 man Death Company
 5 man Assault Squad
 
 Cost $100
 
 So, you
 lose  a Combat Squad and a Scout Squad, and you 
gain 5 Death Company troops, for $10 more. The 
DC will get you more mileage than what you lost, as they're used in some 
BA lists, but more for fun than anything (because the Rage 
USR makes them unwieldy).
 
 ---
 
 Now, it's worth pointing out a few things you might not have considered:
 
 (1) You could always use the 
DC bits from a 
BA battleforce to mix and match with the Assault Squad pieces and make them all Assault Marines with extra 
BA bling on their armor. That makes the 
BA box a little bit of a better buy, but not much.
 
 (2) You shouldn't ever buy a rhino. As I'm sure you realize, the Rhino chassis is the basis for most of the 
SM vehicles. That means, through the 
wonders of magnetism, you could invest money in a Baal Predator (which is awesome) instead. Turret on = Baal, turret off = Rhino. This makes the battleforce a slightly 
worse buy because you have a single-purpose vehicle instead of a multi-purpose one.
 
 (3) Some people will be quick to tell you that you can take your 
Tac Squads, buy Jump Packs, Chainswords and Bolt Pistol arms off eBay and turn them into Assault Squads. If you buy the battleforce planning to do this, and add in the shipping costs/expense/hassle of finding those bits on eBay, you're suddenly not saving as much as you thought you were...
 
 ---
 
 Now, let's look at what you have:
 
 1 Captain (
AoBR): convert him into a librarian or use him as a counts-as. I have never seen a captain in a 
BA list.
 2 Terminator Squads (1 shooty, 1 assault) and 1 Land Raider Redeemer: These work okay in a 
BA list as a death star unit. Obviously using Termies restricts some mobility, but the Land Raider takes care of that. Stick a 
Sanguinary Priest in there and you'll scare some folks.
 1 Dreadnought (
AoBR): There are lots of dreads in the 
BA codex. They're a bit underrated, 
IMO, and can be a lot of fun. If you're worried about 
WYSIWYG, plan on doing some conversion work if you decide you like furioso/
DC dreads better.
 2 Tactical Squads (10 each) and 1 Scout Squad with Sniper Rifles (5 man): I don't know how much use you'll get from these, unless you want to convert/proxy them as Assault Marines.
 1 Vindicator: No changes here, gives a lot of firepower to a 
BA list, I've seen a bunch of lists with these.
 
 What you can add to the list:
 - 
Assault Marines: Can I say this enough? You need more. If you're feeling daring, magnetize their 
JP's so you have the option of going with LasPlas Razorbacks or Jump Packs.
 - 
Baal Predators: Super mobile with good firepower in a 
FA slot. You want 2-3
 - 
Librarian: Unless you use a unique 
HQ, librarians are pretty much a default. If you want a little artistic freedom, build your own from a commander box instead of buying a metal model.
 
 Anything else will come down to your own desires of what to add to the list. I would peruse the 
40k Army List forum and the 
40k Tactics forum to get an idea of how people build lists in 
BA, and what units they like and don't like.