Titan makes good shocks to replace your standard items. pretty hardy too even with frequent driving on bad roads
BUT if you're going for coilovers, i suggest you borrow a drive from your friends before you decide.
Talk to the boss, tell him what you require in a set of coilovers. That should help you decide. Also, Talk to people who've been there and done it.
You will definitely need a couple of visits back to Titan to achieve your perfect ride and height. Search the forums, there are some valuable opinions about their product and the all-important customer service.
If you need something that you can just buy, drive and virtually hassle-free, I really suggest the safer, more recognized routes.
Loafer: a set of Hotbits coilovers go for less than 4 actually.
I also recently saw an ad on the local mags on the GAB brand. they have products for the E36