While certainly not new to fishing...I'll admit to being a relative noob to intelligent fishing. I'm sure you're all getting tired of being asked these types of questions...but here I go!

Purchased some new rods and reels for the upcoming season and I'm having a heck of a time determining the type of line and strength to put on them. Lots of various opinions out there on what line to choose with regards to a certain type of lure/technique. If possible, I'd like to simplify things a little for myself until I've waded into the water a little deeper and have added specific rod/reel combos for specific scenarios (future thinking).
Here's what I have and what I intended to use them for:
Dobyns Champion 704C/Lews Tournament Pro reel - Soft plastics (Texas rigged), Spinnerbaits, anything else?
Dobyns Champion 705CB GLASS/Lews Tournament Pro reel - Crankbaits, Jerkbaits, Spoons, anything else?
Reading the interwebs has one believing that I "need" a specialized rod/reel/line combo for every different type of technique. While it may not be the best solution, I have to believe there's a more gerneric line type/strength that I could use for the above.
Recommendations on the type of line and the strength would be much appreciated. And, if there's other techniques I didn't mention or I've ascribed an incorrect one for a particualr rod above, I'd certainly welcome the advice.
And just one additional question: Instead of buying more rods at this point, would it be more wise to buy addtional reels and put different lines on them? Then, I could simply change the reel on a particular rod and it satsifies the requirements of another technique? Sure it would take time changing a reel out but I can't imagine it ruining my day on the water and it saves me from buying another quality rod at this time!
Cheers and thanks for any help in advance!
Bryan