Well take what you will or can from what I post, I'm still fairly newish and am not experienced or very knowledgable with most if this. And probably have little to no idea what im doing with ship builds.
So I can't really speak to merits or not of the build you posted there in op. But I can offer my recent experience.
First off I would not sell my whole fleet to buy the anaconda, I thought about it but decided not too. Even if you sell all the modules then the ship stripped down, you are still losing 10% ? Of what you bought the ship for. That's potentially millions lost depending on ships, and if you plan to buy some of them again it's just extra work. So I would think about that heavily before deciding.
At the very least I would keep a ship capable of landing at medium pads and with a good jump range if you have one. Especially if you still need to get some fed/ imp ranks and stuff. Again depending what you do in game. For instance I unlocked engineers recently and was glad I had my Dbx for the on needing either the cigars or funjin tea as it was a 150 Ly or so trip requiring several trips, 5 in total I think. I was able to save about 10-20 jumps each way during this by kitting out my Dbx for the 10 tons at a time instead of running the anaconda back and forth.
As far as outfitting the anaconda I full agree with Jean luc and others, don't go into battle without top rated ditributor and power plant. Even with mine I can run dry on power reserves while firing weapons for extended periods. But I do use turrets and gimbals.
I don't use Coriolis but here is my build. Main internals are all highest A rated except thrusters which are still the base 7e and it's tough to maneuver in battles at times. I went with a 7 bi weave with a probably not so good grade 3 reinforced mod. Including 3 a rated boosters 2 of which are grade 3 resist augmented. Even with that shields can go down fast with 2 decent ships attacking or anything more than 2 ships and it's pretty much time to bail fast.
My ditributor is 8a with grade 2 charge enhanced, (idk if good mod) and power plant is is 8a with only a grade 1 low emissions mod (again idk if good but it helps with heat buildup during battle) with my weapons being beam laser in my 1 and 2 slots, a pulse in the lone 3 on the bottom all turrets and then two multi cannons in my dual 3 slots on top and another in the 4 slot, all multis are gimballed and I can still have issues with power depletion in long engagements. Creative and constant pip management is a must. But for the most part it's workable and pretty deadly in 1 to 1 or me against 2 ships. But I burn a lot of shield cells and heat sinks at times. With a low distro and power plant it would be impossible I think though.
I recently changed out my grade 2 beam turrets for a couple pulse gimbals but haven't tried it out. Also my armor is not upgraded and my military internal slot is empty still. And if my shields drop its pretty much bye bye. I lost my ship 3 times the other day when a cz went bad each time so a early and quick decision to run is required, and hope i don't get significantly mass locked at all.
My anaconda is by no means spec'd purely for battle either. I use it as an all arounder currently. But lone interdictions or the npcs that come with mission wrinkles tend to be easily handled for the most part. Cz's are quite difficult in a sense of you need to be very aware and constantly watching what kind of attention you have. I got too confident and was quickly killed before I knew what happened a few times already. And again I'm probably not what anyone would consider good at piloting or anything so it could be I suck lol.
Any ways sorry for the long post, thought I'd throw out my experience as a newer anaconda flyer. But certainly there is better advice than me to have.