CHAN0 = 193
Would also work.

Take a look at this from the data sheet.
Name: ADRESH.jpg Views: 607 Size: 38.0 KB
When using 8 bit ADC we are after the MSB from ADRESH.
If we want 10 bit ADC we would grab a couple extra bits from ADRESL.

So you are on the right track.
Here is a snippet from something doing 10 bit.
TC is a WORD size VAR
Code:
getT2:
	ADCON0= %00000101   '$5  '%00000101 AN1
ADCON2.7 = 1
	gosub getAD
	TC.highbyte = ADRESH
	TC.lowbyte = ADRESL
	return

getAD:
	pause 50
	WHILE ADCON0.1=1:WEND 
	return