Macross - a really simple job

Although very simple, I'd like the very best codes for this one 

MQL4 Expert Advisor

extern integer SMA1 length = 22;

                extern integer SMA1 offset = 0;

                extern integer SMA2 length = 35;

                extern integer SMA2 offset = 0;

                extern double benchmark ;

                extern double Lots = 0.1;  

                extern total TL = -5000;

1.       Order can be placed ONLY if AccountFreeMargin() >= Lots * 2000.

2.       SMA1=iMA(0,0, SMA1 length, SMA1 offset,MODE_SMA,PRICE_CLOSE,1);

SMA2=iMA(0,0, SMA2 length, SMA2 offset ,MODE_SMA,PRICE_CLOSE,0);

Int ticket, count,

/* If (ticket<0), then can place order ticket */

3.       Place Buy order if SMA1 - SMA2 = benchmark set by user

ticket = OrderSend(Symbol(),OP_BUY,Lots,Ask,3,0,0,   "MACROSS",count,0,Yellow)

Close order if

SMA1 - SMA2 = benchmark set by user (when they cross again)

/* Once BUY order is closed, immediately open another SELL order for the same amount at the first available price */

4.       Stoploss 0.1% for both BUY and SELL ORDERS

Notes

1.       only open position per instrument can exist at any given time;

2.       print () error message if order could not be executed.

3.       Stop EA if error occurred.

4.       Stop EA if total loss is greater than TL

5.       PLEASE use comments as much as possible

6.       I’m completely new to MT4. If you have commonly used money management modules, please do recommend them.

7.       Basically I want to buy (or sell) whenever the 2 SMAs cross each other.