I would rather not use a 87c with the Ilford SFX 200, as the Ilford is only sensitive up to 740 nm. I tried the 87 with that film and had no image, as 50% transmission at 780 nm means about 1% or less at 740 nm and that already is on the edge of that film. But the 695 Heliopan should work fine.(posted 8543 days ago)Agfa APX 200S, which might be hard to get, is sensitive up to 770 nm, so using an F3 camera I used a 87 but required 5-7 stops filter factor(Gossen Variosix F). Regarding speed and grain I rate it far superior to the SFX 200. I use a 29 filter, TTL metering (F2AS/F3) and rate at 800, develop 10 mins in Tmax.
For indoor I use a nice Philips Infrared lamp, 150 Watt, did cost some 25 DEM. Combined with a 29 on the lens gives enough light for handheld portraits.
Kind regards,
Wolfram