msp430f2274 write to flash InfoA

I would like to store a special sequence number in flash. Is there any advantage to storing it in SegmentA (InfoA) segment with the following code:

void write_SegA()
{
	char * Flash_Addr = (char *)0x10F0;

	BCSCTL1 = CALBC1_1MHZ;                    // Set DCO to 1MHz
	DCOCTL = CALDCO_1MHZ;
	FCTL2 = FWKEY + FSSEL0 + FN1;             // MCLK/3 for Flash Timing Generator
	FCTL3 = FWKEY + LOCKA;                    // Clear LOCK & LOCKA bits
	FCTL1 = FWKEY + WRT;                      // Set WRT bit for write operation
	
	Flash_Addr[0]=1;
	Flash_Addr[1]=2;
	Flash_Addr[2]=3;
	Flash_Addr[3]=4;
	
	FCTL1 = FWKEY;                            // Clear WRT bit
	FCTL3 = FWKEY + LOCKA + LOCK;             // Set LOCK & LOCKA bit
}

I notice it does not erase first, will this work. The sequence # must get updated every 15 minutes.

This area of flash is 0xFF, so should be fine to use.

Thanks, Tom