It was just an idea, so I'm not sure, whether it'll work or not. But that's what I thought:
To hit the Elite Monger after collecting six gems, I thought that you could use the basic idea which I described about one week ago (which we'd use to kill the Elite Monger for 2000 combo points). In this case we'd take only 4 gems at the top (be careful not to touch any yellow can), fall down on the single yellow gem in the corner, jump down to the entrance, take another gem in that process and then quickly finish off the Elite Monger.
I actually think it can be done. The problem is that you need to play very precisely. That's why I haven't really tried it seriously yet.
A second idea was to activate the lava and then quickly climb the tower without taking anything, until you reach a yellow can with two gems near it. Now you were supposed to take the gems, fall down to the next two gems in a corner below, then get the gem on the next platform, fall down, kill the Elite Monger and quickly jump out of the room (the lava should be high enough).
I tried it today and actually everything seemed to be possible, except that unfortunately you can't get the first gem which is floating in midair by simply jumping from the wooden platform. This probably makes the beginning impossible, so that we can presumably forget the idea...
For the second part of the combo I thought about following:
After taking the green gem, breaking the three piggybanks and collecting the gems inside, kill one of the hoodlums and convert the lum. Quickly run to the red can, break the wooden door and get everything in the small room behind. Continue with the nearby piggybank which contains some red lums and with the next piggybank. After collecting the yellow gems from the latter piggybank, jump on the spiral stairs, break the next wooden door and then quickly kill the second hoodlum. If there's enough time, convert the lum, otherwise run immediately to the gem under the statue and finish the combo with the next two piggybanks and the gems inside.
--> YYYYY|YEmHHH|HHHHG|PPPYY|YYYYYYYRRRHLDPPPYYYYYYYYYYYYRRRRRRPPYYYYYYDHLYPYYYYYYPYYYYYY
Basic Points: 7420 (I assumed you'll get 6 one-hit-kill-boni)
Combo Points: 23820
Total Points: 31240
Potential Maximum: 123829
After collecting the gem under the statue, breaking the nearby piggybank and collecting the gems, I once managed to perform a rolling SJ on a ledge between the two last piggybanks. Then I could break the second piggybank while flying upwards and reach one of the gems on the wooden, unstable platforms in time. Then you should be able to take another gem on the platforms, fall down and finish the combo with the gems from the piggybank. (I hope it's somehow understandable).
--> ...YPYYYYYYPYYYYYYYY
This would lead to 124029 points.
Actually I think that all this should work, it would be just very difficult though, especially the part with the Elite Monger.
Edit: I forgot to mention that you might possibly take six more gems in the combo: .... Collect the green gem, then break the two nearby piggybanks with some gems inside. Get the gems and start helicoptering towards to the six yellow gems, which are more highly situated (somewhere near the tower with the spiral stairs). To keep the combo going, break at first the third piggybank and then, two seconds later, kill one of the hoodlums. Take the six gems and fall down directly onto the red can. Then break the door and continue as described above.
If that's possible, the maximum would be 500 points higher (you won't be able to convert the lum of one of the hoodlums), i.e. optimally 124529 points.