Sentence 1: Will had been thinking about upgrading his computer. 
 Sentence 3: But after he finished upgrading his computer, he felt sad 
 Sentence 4:  And he thought about all of the other things he could have bought 
 Sentence 5:  Will decided to save his money on his next pay day 
 Option 1: When Will got his paycheck he spent it all computer parts that ended up not working. 
 Option 2: So when he got his paycheck, he spent all of it on computer parts.