You could always put a video card in the 575. You'd have to set it up so that it always defaulted to this card but it just might work (I've done this on an LCII with a Radius card before but have never tried using a card-based video system on the integrated LCs). You do lose your PDS slot, unfortunately, making the machine far less expandable.
The 475 is a great machine too, but the 605 (identical to the 475 under the hood) will give you a slightly different case bottom with four large feet (which some on this board affectionately refer to as "feets"). The integrated video on the 475 will support 1MB, which works fine if you are using a smaller display and want a decent bit depth (and want to free up the PDS slot for something else). It's also very easy to get replacement parts (namely power supplies) for the 475/605 because of the number of LC series machines on the used market. Many parts are interchangeable with the ubiquitous LC/LCII/LCIII.
If you're looking to use a 500 series without a monitor, you may also want to consider the 580, which uses IDE drives instead of the less common, pricier SCSI. The monitor on the 580 is a shadow mask display, not a Trinitron, and is generally considered to be inferior to the older 575's display. (The 580 was the "cost-cutting" model of the 500 series released late in the cycle as a lower-priced alternative to not only the 575, but also the 5200).
The 475 is a great machine too, but the 605 (identical to the 475 under the hood) will give you a slightly different case bottom with four large feet (which some on this board affectionately refer to as "feets"). The integrated video on the 475 will support 1MB, which works fine if you are using a smaller display and want a decent bit depth (and want to free up the PDS slot for something else). It's also very easy to get replacement parts (namely power supplies) for the 475/605 because of the number of LC series machines on the used market. Many parts are interchangeable with the ubiquitous LC/LCII/LCIII.
If you're looking to use a 500 series without a monitor, you may also want to consider the 580, which uses IDE drives instead of the less common, pricier SCSI. The monitor on the 580 is a shadow mask display, not a Trinitron, and is generally considered to be inferior to the older 575's display. (The 580 was the "cost-cutting" model of the 500 series released late in the cycle as a lower-priced alternative to not only the 575, but also the 5200).