I bought a year ago, just passed my anniversary. It has not been a smooth, turn key transition. There are so many factors to consider, but as has been stated earlier, be ready to drive. If you can't/unwilling drive, you will be in trouble at some time if you don't have dual redundancies. If your father has 2 routes (did I read that right?) and you are buying 5, that's seven guys that could have issues - sickness, injury, etc. Have a second level. You will be glad you did. If you end up in a bad position, the terminal can pull you contracts...I have yet to see that happen due to service, but it can. There is a reason the SBA won't finance FedEx routes/equipment.
I would be careful to trust the numbers. My seller also touted $200K and his gross numbers matched, but it turned out he ran 8-10 trucks during the previous peak to inflate his gross by $25K. He also did nearly ZERO maintenance. If you clear $200K I will fall on my face and worship you. Plan on a more realistic $20-30K contribution per route to the bottom line - IF YOU HAVE SOLID TRUCKS. This business looks real good on paper, no so much at the end of the year. There is a reason FedEx is continuing to have record profits. Before you buy, I would do as suggested, and rebuild the last 24 months of stop counts, package counts, mileage, hours, pick-ups, anything you get paid for. Check everything and be very thorough about estimating every cost - add in your dog grooming, electric bill, etc, because I don't think anyone can build accurate proforma income statements until actually running the business. You are just too dependent on the sellers records. You get paid in pennies and pay in dollars. Doesn't take much to wipe out a quarterly or monthly bonus.
Lastly, trucks, trucks, trucks is like location, location, location is to real estate. These will make or break you. Our first year we put over $40K into 4 trucks. Don't underestimate a single repair. If the seller tries to down play the repair, he is lying. A cheap repair is $400. That is 1.5-2 week's profit on a truck. I was seeing bills at the rate of $1500 to $2000 a clip. If he has any manual trucks, get rid of them. You will have a harder time locating drivers. Also, being his last 5 routes, you probably have the last 5 trucks no other buyer wanted. BEWARE.
Lifestyle is significantly impacted unless you pay someone else to do the work for you. I am still doing work at midnight every night, but I like numbers and understanding patterns to take advantage of those patterns. I haven't been able to take a family vacation yet. If you want to talk, I will give you my phone number or email address and we can chat.