Dungeons & Dragons 4e: Overdrive

So this summer we have a Dungeons and Dragons game planed for my oldest son, Brandon, and myself.  I am going to DM and he is going to play. He will be taking 2 PC's and I'll be taking an NPC to help him out, depending on what he is lacking in the party (healing, defender, etc.)

Our idea is to play 3 sessions per week, in the evenings, using the Dungeon Delve scenarios (Dungeon Delve has become one of my all time favorite D&D books). These should be fast and fun, taking between 1 and 2 hours per, and the Dungeon Delve book has 1 scenario (mini dungeon) for each level, 1 through 30.

The plan is to play the short scenario and then at the end of each session, regardless of how much experience we did, we'll level up our characters, I'll award a generic treasure parcel as needed to compensate for the lack of adventuring... then, the following game it will start off with a short narrative "It has been several weeks since your last adventure, and you have gone up a level..." and we'll continue this way from level 1 to 30.

I am not giving Brandon to much info on my plan, but I do intend to tie the entire set of Delve adventures together into a long string and ongoing campaign. My idea is to have his main character (whichever of his two he likes the best) on a life long quest to slay the dragon that killed his (insert relative here). Brandon has a fascination with Dragons and really wants an epic battle with one in D&D. So my idea to tie the Delves all together is to make him on a quest following clues along the way (leading from one Delve to another), sometimes he'll get nothing out of the Delve, but other times he'll get some clues.

My idea is that a wizard who knew how to defeat the dragon had died before Brandon's character could track him down, but the Wizard had a journal. Over the first 10 Delves (or so) the party will be searching for the journal. Maybe finding it in the 3rd or 4th Delve, only to discover key pages were missing, etc, etc.

Eventually the journal would lead them to a set of magical blueprints to create a (insert weapon here) that can be enchanted to kill the Dragon. It is the only weapon in the land capable of beating it, etc, etc...  Once he gets the weapon (level 20 or so) and assembles it. He will then need to hunt down rare and magical components, finally leading him to the grand finale (in 1-1/2 months time) where the group of level 30 adventurer's will face and battle the Dragon.

I'll post more as it happens, this campaign isn't starting until the second week of July, so I have time to plan more.