Building a non modded FRIGGIN HUGE space station

[Captein]

Title pretty much says it, I'm attempting to build some huge a** space station around kerbin, for refueling, storing some crafts, rovers, and giggles and stuff... either way, the thing is all modular, i put the core on orbit, with a temporary recharge array, and an attached landing pad, the plan is do add like 5 more pads, a few of extension parts becuz pads arent big enough and i already had to design for 4 hours straight a way to get it flying, plus, theres gonna be a friggin radial mounted 8 jumbo tanks bellow it , an inline 10 capsules for holding loads of kerbs, what would be some walls, bridge, hell maybe a missile laucher! goddamn rover cranes and massive engines for moving the entire thing into the epicness

what im wondering is that, actually how big can stuff be before things starts going bad, heres some pics of the starting Project:

Top side view with a landing pad (designed for the coolness sake of it) plus a "crane" ship designed just to be able to move the pad and attach it to the core, otherwise it would be impossible, the thing wobbles ridiculously moved from behind, impossible dock, had to be docked that way, plus a jumbo tank that will be discarded, used for moving the core to its position, plus a dettachable, temporary solar array

A diagonal view of the pad, wich is suppose to carry a plane on each side, one on top and one bellow, the pads are double sided.

the final plan is to add 5 more pads so i can "land" 12 planes in there of various sizes, the one docked there being the largest one atm.

i find it odd that, i dont think theres too many parts there, but things are quite... sluggish... if i activate time warp, its no problem, everything runs smooth.. also, ive heard of people saying that their stations simply blew up upon loading because they were too large... really it takes me 2 hours to dock a pannel

such a complicated thing to transport and dock, requires engines to put it on orbit, a ship to come grab it, reserve propellant and fuel for the "crane" ship because its so hard to handle and WOBBLES ridiculously...

while there isnt much accomplished my plan is quite ambitious, I want to make something badass, attaching several parts together, but how ksp reacts to stuff like that? Hell once its done i dont even want to launch stuff from kerbin anymore for exploring random planets around universe... if my goddamn station explodes to bits after loading, i think im gonna burn my computer...

advices, comments and hints are mostly welcome, im a friggin newbie still, i just know how to attach stuff together lol, if somehow i can, im gonna make a huge friggin epic Project out of this, so back to docking more parts..