You can fit those tires with the pinch weld, just don't wheel, because you'll still be taking chunks out of your tires.
In regards to your "also"; depends on what 2.5" lift you're talking about. If it involves compressing your coils, give yourself 2 to 3 hours for the front, if you have to compress. If it's an assembled coil over swap, give yourself half an hour. Both easy, just be sure to buy/rent decent coil compressors and have air tools if you have to compress your coils. And for God's sake, don't rush.
In regards to your "also"; depends on what 2.5" lift you're talking about. If it involves compressing your coils, give yourself 2 to 3 hours for the front, if you have to compress. If it's an assembled coil over swap, give yourself half an hour. Both easy, just be sure to buy/rent decent coil compressors and have air tools if you have to compress your coils. And for God's sake, don't rush.