The effects are inline;
top row from left to right 1 - 4
bottom row from left to right 5 - 8.
Here is some info on the effects and the order. Just to note, the MXR Script Distortion+ is not the same effect as the Series 2000 Distortion +.
By the end of 1979 what appears to be the Boss DS1 enters top shelf right after the MuOctDiv & Mu3. This could be the OD1, but imho, i am pretty sure it is the DS1.
By 1980 That Boss DS-1 gets moved from behind, to in front, of the MuOctDiv &Mu3 and stays there until sometime in 1982 when it leaves. Then the MXR Dist+ gets moved from the bottom shelf to the top before the Mutrons. No Dist/OD on bottom shelf, just Phase 100 and Analog Delay.
At the begining of 1983 the MXR Dist+ is moved back to the bottom shelf before the MXR Phase 100, briefly there is no Dist/OD on top shelf. But by the end of 83 the MXR Series 2000 Distortion + is placed before the Mutron's. The series 2000 stays there until around 1987ish.
The Boss HM2 arrives and replaces the MXR Series 2000 Dist+ sometime in 1987/88ish. but by 1989 the HM-2 was replaced with the Boss Turbo OverDrive OD-2 and the MXR Dist+ was replaced with the Boss OverDrive OD-1.
A Boss OC2 enters with the MuOctDiv in 1989 and eventually replaces it. And in 1992 the EQ's are added to each shelf after the OD's. The Crybaby Wah goes on the bottom shelf #5 position. The MXR Analog Delay is replaced by an ADA 2FX, also a TC2290 was in the rack from late 89 to 92. And an MXR Pitch Transposer is seen in the rack in the late eighties.
Here is a basic footprint of his effects order from 1979.