Need Advice on Tank

I just bought a 125 gallon tank from a guy on craigslist.  After getting it loaded into my truck and I've paid for it he throws in that the tank as never seen water and has sat in his storage shed for 8 years.  So that is 8 winters and 8 summers of significant temperature changes.  Now I am starting to fear when I go to fill this tank for the first time, the pressure is going to be to much and my newly remodeled basement floods.  I am now thinking I should probably trickle fill the tank either while it is still in the garage or move it out onto the drive way and fill it there prior to moving indoors.  I spent $700 on the tank, glass lids (3), hob overflow, stand, sump, skimmer, and 2 pumps.  To me that isn't to bad (until I saw a post this evening for a 180 gallon setup - I cried..).  I've also looked into what it'll cost me if this tank breaks for just a new tank and it's pretty close to the $700 I just spent on all the items listed above.
So what I am looking for here is if anyone know of a way I can prevent this from happening?  I really don't want to lose this investment.  I'm going to guess if this tank breaks my fiancee probably wont let me continue with the hobby of being a reef keeper.

 

was hoping we'd see a week in the upper 60s by now but no such luck. as I get closer to getting the basement finished I plan to get some water into the tank. I noticed that the trim around the top and bottom is cracked in places. is that going to effect anything other than the lids not sitting right?

 

Silicone looks fine to me but I haven't really taken a lot of time to go over it with a fine tooth comb and really get a good look at how the seal on the tank is. I'll go over the silicone with a sharp eye prior to adding water. thanks for the help guys

 

where do you get new trim? I know at least one corner is missing and there are 2 or 3 vertical cracks on the top as well. The bottom as 2 or 3 crack in it as well. Thanks for the advice.

 

@armydog - Wasnt just the tank. It was tank, stand, nova sump, nova hob overflow, glass lids, 2 pumps, and a broken skimmer (collection cup is destroyed)

@iaJim - Tried to call him but number comes back disconnected. Wonderful right?

I'm going to see what the manufacturer says about the tank and take it from there at this point. so going to be pissed if i cant use the tank and have to replace it

 

Working with a few LFS's to see who can get the top trim at a reasonable price. All Glass said the top trim needs to be fully intact in order for the tank to hold the water pressure. So I must replace it or the tank is use less. Will report back once I have a price on the trim.

 

would like to say thanks for all the help. mr.jeff.wagner stopped over last night and checked the tank out for me as a second pair of eyes is better than one. He says that the silicone may need to be replaced but wont know for sure until i add water to it next saturday. he also said that the cracks in the trim are minor and to just epoxy them so they dont have a chance to get any bigger.

so thanks jeff for the second set of eyes and now i can save $200 and spend it on LR and fish

 

@ Andy - Are you still able to order the top trim? I was working with Pet's Playhouse and haven't heard back from them on pricing. Was going to call Hung at Sea of Marvels but haven't had a chance to yet.

I haven't seen a 125 gallon tank going that cheap retail. Seen them more around $500 - $600.

@FishBrain - Would love the assistance but got to find the parts first.