Here is the layout at the start of the game.
1 star 68,000
2 stars 73,000
3 stars 78,000
Use Multiplier and extra Joker.
For part 2 plan out a run that will unchain the three cards then use your jokers to continue the run and remove the now unchained cards.
With good planning you should be able to clear most of the cards too.
When you start long runs take your time & look at ALL possible routes.
When you hurry you miss the best route and end up forgetting one unchained card until you hit the deal and BAM! it's chained again with not enough cards to clear it!