You forgot that your install media is use once only, and that to reinstall you need to order a new set of media from the supplier, who will send you a nice new to you set of 3.5in diskettes, provided you send in your old media first. They also will take 3 weeks to process the return, before sending you the wrong set of diskettes, or where disk 17 of 33 is faulty, and will not read properly.
Also be sure to include a hardware dongle, which absolutely has to be connected to a proper Centronics standard parallel port, which has to be the type with open collector outputs, and with a 5V termination supply, and has to be LPT1 as well, at the standard XT base address. The dongle will not work reliably with any sort of multi IO parallel port, and definitely not with any EPP port, but strangely enough will work at least the first time you use it, but will randomly fail afterwards, and brick the dongle.
Otherwise use a serial port, but have an external serial to RS485 converter box, powered by a cable led out through a hole in the PC case, and with thin wire connected to a socket, attached to the 12V power supply rail. As a bonus the software will only work with a genuine 16450 UART chip, as it uses features not actually used on the original PC, and thus not implemented on the later ASIC versions, and definitely will not work with the 16550 or any on chipset emulations.