If it's not too late, you can keep the bleeding to a minimum, by keeping fluid in the lines while the calipers are disconnected.
Here's my sermon on the subject...
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You can prevent Master Cylinder Brake Fluid Loss from any/all open brake line(s) by blocking the brake pedal depressed before you start. It only takes an inch or two on the pre-ABS 240s. The ABS 240s need more pedal travel, like the 799/900 cars (in which case the bleeder needs to be open while pedal is being depressed).

The 700/900 Green Book shows the 700/900 pedal fully depressed by a special tool (easy to replicate with a 2x4, etc.). The book also says to open a bleeder first, and use a tube and container to catch the fluid expelled when the pedal is being depressed.

>>Disconnect the battery to keep brake lights off while the pedal prop is in place.<<

I've been using this on '80s 240s for about 15 years now—since I learned it from an independent Volvo specialist. I made a wooden prop that hooks to the bottom edge of the pedal and bears against the 240 seat adjuster bar. It's handy for checking brake lights too.
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Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.