Han’s rescue plan discussion

I thought I try to fix this rescue, so that it makes sense.
So I was thinkin what I would have done.
Well it took me like 30 minutes to come up with a viable plan how Lando could infiltrate relatively fast as mercenary, and not getting killed in the process, to explain how could he get there in a week.
But to come up with a good rescue plan that works in a movie is rather difficult.
The main problem is that Luke waltzes in like it is Walmart.
Yeah only 2 guards and Bib Fortuna? Way too easy. One would expect better security.
Still Luke will get in, no matter what I put in Luke’s way, so there is no need for the others to get in after Lando. They better come with Luke. Damn.
So naturally my plan would be rather simple. Hire 6 elit mercs, probably mandalorians, and frontal assault would just work fine. Jabba either gives up Solo or they shoot up the place.
Oh and before anyone thinks they have no money to hire mercs, Han and Chewie probably still has the Princess reward money, and Lando surely has some offshore stash from skimming Tibanna gas deals.
So if this is the plan that works best, we have no movie.
Need another plan.
A worse one.

So what we 'know":

First of all, all major characters have to be involved somehow.
Han is not mobile.
Jabba is a gangster boss so one would think it is heavily guarded fortress, and a frontal assault probably gets everyone killed, so Luke’s entry needs to be ‘REVISITED’ (pun intended). There should be like 10 guards in his way, and a defense turret or two. (which I would like to see in a supposed to be fortress).
It would only make sense that Jabba rarely leaves his fortress. Only for personal reasons, or to conduct business with equaly highly ranked players like him, or for official duty, like opening ceremony of an event. (podracing). (I know)
Lando is already in as a merc, which is a good move
Sending Artoo with the message is ok.

Needs to be solved

What to do with Leia
What to do with Threepio
Get Luke in
Get Jabba out of the palace

So far so bad. I can see why Lucas struggled with this.
I was thinkin about this all week, which is several hours, and Im nowhere with a plan.
But some idiotic moves actually starts to make sense, if I overlook some other idiotic things.
And I realized that to criticise the plan, I have to come up with a better one. Well, I got nothing.
So if anyone says again that it’s crap because Lucas didn’t care about the plan, I will smack him in the face. Virtually.