Candle Power Flashlight Forum

Hello there, new to the forums here!
Keep winding up back at these forums through google searches, so I thought I would just reach out to the real people for the real responses.

Let me know if you're tired of talking about solar garden lights, I will move on alone with my tail between my legs.

What's in place:
I recently completed rebuilding my front porch, I had this idea that I could put 1 Lumen solar garden lights in the kick board part of the railing system so that some of my porch would be lit. (I live on a dark street.)
The lights are in place and when they turn on at dusk, it looks amazing.

The Problem:
My house faces west, my porch has a roof and the neighbor has a well established tree to the southwest, blocking all good direct sunlight my solar garden lights need.
On the brightest, clearest day, I might get two hours of light at best from the solar garden lights.

The Potential Project:
Replace the factory LED's and circuitry in the solar garden lights with these: http://lighthouseleds.com/5mm-12v-pre-wired-led-white-ultra-bright-15-000-mcd.html (Leaving the original solar cells in place for cosmetic purposes.)
Put a 50W or so solar panel up on the main roof of my house where there is no shade from a porch roof or tree,
Put a deep cycle marine 12V battery in a plastic battery box with charge controller under my porch and run wire to each solar garden light with the new LED's in them.

Any: Thoughts? Questions? Comments? Concerns?

Seeking: Guidance. Direction. Positive Reinforcement.

Thank you all in advance for your time.