Two improvised armoured cars with MG @ 60 = 120 points
Three un-armoured cars with MG @ 50 = 150 points
One unit of eight Wildcatters/Roustabouts (T5/M5), marksmen with bombs, including two BAR gunners @ (14 x 6 = 84) + (2 x 16 = 32) = 116 points (2)
One unit of fourteen White Russian mercenaries (T4/M4), with bombs @ 8 points = 112 points. (3)
One sniper (T5/M5) = 25 points (4)
One Staff Officer = 60 points
Two Maxim Machine Guns (T4/M5) @ 72 points = 144 points
One DH2 Aircraft = 150 points
Total = 987 points
(1) I had to guesstimate the points value for the Garford Putilov.
(2) I substituted BAR's for the Lewis Guns in the original list on the basis of WYSIWYG.
(3) These are an alternative to Chinese Troops but count the same in points.
(4) I've chosen to have a dedicated sniper, rather than a sniper / staff officer rolled into one.