It is hard to give an estimate of any coin or token with out knowing the condition. A scan of everything would help and can be uploaded to this site by going to the top of the page and click 'file upload' and following directions from there.
As a rule the $10 Stratosphere Silver Strikes are worth $10-15 if sold individually as most are very common. You will be lucky to find someone to buy them all at one time for face. The Hacienda Casino Silver Strikes are a little harder to find and bring generally between $25-50 each or $100-150 per set. You don't state what denomination the Sterling silver tokens from the Lady Luck are so there is no way of knowing what you have. Same with the 7 #0001 Stratosphere gaming checks with no denomination or description. If you can post a picture of the clear plastic Strat Tower with the 20 Silver Strikes I am sure you will get some interest from our members. If you are unable to upload the pictures you can send them to me in an email and I will post them for you.